Beta NFs are considered to be "dark" or at least darker than Alpha SF in terms of emotions. I feel like there's a connection because many fictional IEIs have been in these types of stories; Romantic tragedies such as Ophelia from Hamlet, Juliet Capulet, and Desdemona from Othello. IEI as a type tends to also be identified with people who are INFPs and enneagram 4s, and I'm sure you know the stereotypes among that type combo.

I'm not trying to be mean, but the outrageous personal ideals of some IEIs who get suckered into their wildest dreams coming true if only xyz ... They are incurable romantics who gullibly can get their emotions played based on what they want to believe even if there is no supporting reality behind the romance. It's easy to say whatever one wants if they are wooing an IEI but living that love out in truth and practical care IEIs actually need is another matter. My poor divorced & widowed mother has already fallen victim to many internet love scammers and losing huge money in the hopes of bigger money to come with true love the easy way for just believing. She won't listen to anyone even when all her closest confidants say it is another scam and it turns out to be. It is extremely frustrating because like small children they only do this pain to themselves. My conflicting LSE divorced father can't take any more of her drama and will not even take her calls. He can be rosy eyed idyllic too and have romantic ideals but an LSE will ultimately be practical and never believe a story just because it is what they want to hear. Or if circumstances seem too unrealistic to be together easy enough they simply abandon the prospect of the relationship rather than "trying to make something work for the sake of true love". I thought I was already too vulnerable in love being heartbroken and lonely compared to how much I want being SEI but at least the Si gives me some common sense. Sometimes EASE and PRACTICAL COMFORT exists for good reason to keep us from excessive pain strife and futility. Many IEIs also expect impossibly too much in their social relationships before they feel fulfilled enough to be happy.

I'm not trying to be mean, but the outrageous personal ideals of some IEIs who get suckered into their wildest dreams coming true if only xyz ... They are incurable romantics who gullibly can get their emotions played based on what they want to believe even if there is no supporting reality behind the romance. It's easy to say whatever one wants if they are wooing an IEI but living that love out in truth and practical care IEIs actually need is another matter. My poor divorced & widowed mother has already fallen victim to many internet love scammers and losing huge money in the hopes of bigger money to come with true love the easy way for just believing. She won't listen to anyone even when all her closest confidants say it is another scam and it turns out to be. It is extremely frustrating because like small children they only do this pain to themselves. My conflicting LSE divorced father can't take any more of her drama and will not even take her calls. He can be rosy eyed idyllic too and have romantic ideals but an LSE will ultimately be practical and never believe a story just because it is what they want to hear. Or if circumstances seem too unrealistic to be together easy enough they simply abandon the prospect of the relationship rather than "trying to make something work for the sake of true love". I thought I was already too vulnerable in love being heartbroken and lonely compared to how much I want being SEI but at least the Si gives me some common sense. Sometimes EASE and PRACTICAL COMFORT exists for good reason to keep us from excessive pain strife and futility. Many IEIs also expect impossibly too much in their social relationships before they feel fulfilled enough to be happy.

I can also vouche that my IEI-Fe Mom loved her dual 2nd husband but also took him wayyy too much for granted, often wanting "more" and still complaining even after his death, blind to much of the good he did which she relied on. There is a harsh duality lesson there for all of us about practical limits and being realistic in our expectations of others, especially those we love the most. Most people are already doing the best they can as far as they know.

IEI have strong N and F, so they should lesser than average mistake in relations. when you notice or it seems the opposite - it mb intentional seeking of the problems as having victimish (Se valued) psyche they may neuroticly react on a guilty. also the seen mb partly explained by more open dramatisation (Fe).
also P predisposes to more impulsive partners choice and hence to more of doubtful relations - but this factor is neutral, as those relations are surface and do not hurt them deeply, and this negative should be compensated by relatively good relations

I'm actually very calm and controlled, I just let out my anger when someone acts in a way that I don't like. There's a description of
all the beta subtypes by gulenko, and several people have pointed out that the N desscription fits me very well. I'm investing in real estate, that's said to be common for SLE-N, they are also said to be good at weightlifting and I am that aswell, even for SLE standards. SLE-N is calm and then regrets when the anger comes out, and I do regret when I get too angry, especially when I let it out on people that don't deserve it. I know that I used to be C as a child and teenager, I was more emotional and angry back then, and I also was more creative in the general sense. I've kind of mellowed out since then. I don't think I'm D because I'm not really a leader, SLE D's have a group of people that they lead, maybe a group of friends or maybe they are the boss at a company. I've never been responsible for social events or anything like that, I'm a bit introverted for an extrovert, I generally stay at home. I'm not shy by any means, I just don't like people that much. Also, SLE-D is the kind of guy that never gives up on his goals and keeps on acheiving things, and I'm not really that driven, I have my moments where I just wanna chill. That said, I've been trying to focus more on Se lately as a way to feel self actualized, I've been doing muay thai a lot, I've decided to express myself more freely and to take up a bit more space then I'm used to, so I might be moving up to C or D over time. I feel kinda like I'm in a rut living like I do now, so I'm trying to have some more movement in my life. My parents were like really old fashioned and calm parents that really didin't like Se, and not my brother either, so I think I've been conditioned into acting more calm so I don't make everyone upset all the time. Also, I'm a giant so people generally get upset when I get aggressive, it's a situation that everyone has to deal with when I'm angry, it's not just something that I can be like everyone else, my anger changes the entire environment. So I think I had to mellow out to fit in socially. But I don't have to think about my friends or family anymore, so I can be whatever I want, maybe I don't wanna stay calm anymore idk

IEIs are no more subject to tragedy than any other type. Most of them seem to carry rather idealized visions of where they should be in life and often initially have overly optimistic outlooks about getting there. Their perceptions of tragedy usually come from within, brought on by their own disappointments in life, whereas people around them may not view their situations as really as dire as they say it is. I often think of IEIs when I hear soliloquies in performances where the characters are wishing that life were less cruel to them - meaning they didn't get what they desired. They seem to need realistic friends who can point out the lights at the ends of the tunnels.

“Close your eyes and imagine the best version of you possible. That’s who you really are, let go of any part of you that doesn’t believe it.”
photo courtesy: czuko williams

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Dual type (as per tcaudilllg)
Enneagram 2w1sw(1w9) helps others to live up to their own standards of what a good person is and is very behind the scenes in the process.
Tritype 1-2-6 stacking sp/sx

I'm constantly looking to align the real with the ideal.I've been more oriented toward being overly idealistic by expecting the real to match the ideal. My thinking side is dominent. The result is that sometimes I can be overly impersonal or self-centered in my approach, not being understanding of others in the process and simply thinking "you should do this" or "everyone should follor this rule"..."regardless of how they feel or where they're coming from"which just isn't a good attitude to have. It is a way, though, to give oneself an artificial sense of self-justification. LSE